<template>
  <div>
    <upload-excel :before-upload="beforeUpload" :on-success="handleSuccess" />
    <el-table :data="tableData" border highlight-current-row>
      <el-table-column
        v-for="item of tableHeader"
        :key="item"
        :prop="item"
        :label="item"
      />
    </el-table>
  </div>
</template>

<script>
import UploadExcel from '@/components/business/excel/upload-excel'

export default {
  components: {
    UploadExcel
  },
  data() {
    return {
      tableData: [],
      tableHeader: []
    }
  },
  methods: {
    beforeUpload(file) {
      const isLt20M = file.size / 1024 / 1024 < 20
      if (!isLt20M) {
        this.$message.error('上传的文件大小不能超过 20MB!')
      }
      return isLt2M
    },
    handleSuccess(header, result) {
      this.tableHeader = header
      this.tableData = result
      this.$message.success('上传成功！')
    }
  }
}
</script>

<style scoped>
.el-table {
  margin-top: 20px;
}
</style>
